China’s Health Transitions { Diseases of poverty and affluence Tina Phillips Johnson, PhD Saint Vincent College October 27, 2013 Health transitions Medical transitions are changes in the field of medicine. Health transitions are changes in the health of populations. Comprised of: Demographic transition: patterns of fertility and mortality Epidemiologic transition: patterns of disease Health transitions shaped by: Direct health action Traditional and modern medicine Medical systems Social determinants of health Political stability Economic growth Literacy Education Problems with data Data sources are variable by time and place Insufficient transparency National-level focus Skewed data Disease epidemics Invasion, war, conflict Famine th 20 -century China’s demographic transition Population tripled in 20th century Estimated 430 million 1900; 1.3 billion 2000 Birth and death rates dropped 1950-2000 Population policy 1970-79: Voluntary “late, long, few” policy Fertility rate halved from 5.2 to 2.9 Due to: Wang 2011 Universal education Improved child survival Greater gender equality Demographics (cont.) Skewed sex ratio 1.06 in 1979 1.11 in 1988 1.17 in 2001 Problems? Trafficking of girls Commercial sex work industry STDs Davin 2007 Demographics, cont. Aging population 5% >65 years in 1982 7.5% >65 years in 2012 >65 expected to rise to more than 15% by 2025 Rural-urban migration 12% urban in 1950 50% urban in 2012 Davin, 2007 Figure 3 – Age structure of China (1950, 2010, 2050) Source:(United Nations 2011) Epidemiologic Transition Shifts in burden of disease High fertility, high mortality (pre-transition) High fertility, low mortality (transition) Characterized by infectious disease Medical advances prolong life expectancy Low fertility, low mortality (post-transition) Omran 1970 Increased life expectancy, medical advances, chronic disease Crude birth rate (‰), crude death rate (‰) and % urban population 45 0.5 40 0.45 0.4 35 0.35 30 0.3 25 One child policy 20 0.25 0.2 15 0.15 10 0.1 5 0.05 0 0 1950 1975 1980 Crude Birth Rate Chen 2013 1985 1990 1995 Crude Death Rate 2000 2005 % urban population Burden of Disease (DALYs) in world regions, 2004 (Low- and middle- income countries grouped by WHO region, 2004) 600 80 500 62 63 71 71 67 70 60 400 50 49 300 40 30 200 20 100 10 0 0 Africa East MED Communicable diseases SEA Europe NCDs Americas Injuries Western Pacific Life Expectancy DALY: Disease-adjusted life year; The overall disease burden, expressed as the number of years lost due to ill-health, disability or early death. China’s double burden of disease Infectious diseases and epidemics Chronic and man-made non-communicable diseases Questions? Works Cited Chen L. China’s Exceptional Health Transitions: Overcoming the Four Horsemen of Apocalypse. 2011. Davin D. Marriage Migration in China and East Asia. J Contemp China. 2007;16(50):83–95. Ho CS, Gostin LO. The Social Face of Economic Growth: China’s Health System in Transition. JAMA. 2009;301(17):1809–11. Liu Y, Yang G, Zeng Y, Horton R, Chen L. Policy dialogue on China’s changing burden of disease. The Lancet. 2013;381:1961–62. Omran, AR. The epidemiologic transition. A theory of the epidemiology of population change. Milbank Memorial Fund Quarterly. 1970; 49.4:509-38. Wang F. The Future of a Demographic Overachiever: Long-Term Implications of the Demographic Transition in China. Popul Dev Rev. 2011;37 (Supplement):173–90. Yang G, Zeng Y, Gao GF, et al. Rapid health transition in China, 1990-2010: findings from the Global Burden of Disease Study 2010. The Lancet. 2013;381:1987–2015.